Colin Clarkson has been jailed for more than 10 years after trying to kill a random stranger outside Grimsby's Asda store. The 19-year-old victim was a salesman standing just outside the doorway when he was randomly selected by Clarkson, 51, of Heneage Road, Grimsby. He then walked calmly into the store and headed for the fruit and veg section. There, he selected a pack of raspberries from the shelf, sat down cross-legged on the floor and began eating them. Here's how it unfolded.